Energy Efficiency
Efficiency rating of 97% AFUE—can save your customers hundreds of dollars each year*, compared to standard furnaces
ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs
Variable speed blower motor—provides a quiet, consistent flow of air for enhanced comfort, efficiency and humidity control
Robust stainless steel secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
Built-In Communicating Abilities - This truly digital product is designed to pair with the Lennox S40 Smart Thermostat as part of a fully communicating home comfort system.**
Quiet Operation
SilentComfort™ Technology—delivers the ultimate in quiet, consistent heating
Special sound-absorbing insulation—further reduces sound for quiet operation
Durable steel cabinet—made to last with an attractive, high-quality textured paint finish
Home Comfort
Two-stage, gas valve—works with the variable speed motor to match furnace output to household heating needs
Enhanced humidity control—runs at different speeds to precisely control the flow of heated and cooled air throughout the home
Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
Low-speed fan—provides a consistent, continuous flow of warm air
Reliable Performance
High Quality Steel
SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
SureLight control board—controls furnace operation to ensure high reliability and efficiency
Multi-position models available